Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 963 · 40 questions

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

1. 1.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a fuse or MCB (b) a long wire (c) a bulb (d) a plug top
2. 2.True or false: a ceiling fan mainly makes movement. (a) False (b) True
3. 3.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
4. 4.Which drawing is the symbol for a voltmeter? (a) two or more cell symbols (b) a circle with A inside (c) a circle with V inside (d) a small empty box
5. 5.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they explode (d) they all go out
7. 7.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) Yes (b) No
8. 8.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
9. 9.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is OFF. Does the bulb glow? (a) No (b) Yes
10. 10.Which of these gives us electricity? (a) a television (b) an air conditioner (c) a water pump (d) a power station
11. 11.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. How many bulbs glow?
12. 12.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to save copper only (d) to make bulbs dim
13. 13.Which of these means the circuit is closed? (a) the bulb is unscrewed (b) the switch is OFF (c) a wire has come loose (d) all wires are joined
14. 14.Which of these uses electricity? (a) a battery (b) a mobile phone (c) a bicycle dynamo (d) a cell
15. 15.True or false: to climb an electric pole is safe. (a) True (b) False
16. 16.🔋 Does a cell give electricity or use electricity? (a) gives electricity (b) uses electricity
17. 17.Which of these means the circuit is open? (a) the loop is complete (b) a cell is taken out (c) the switch is ON (d) all wires are joined
18. 18.True or false: an electric drill mainly gives out light. (a) True (b) False
19. 19.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
20. 20.🔋 5 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
21. 21.Which of these is safe? (a) use small battery cells (b) throw cells in a fire (c) fly a kite near wires (d) touch a switch when wet
22. 22.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
23. 23.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
24. 24.🔍 Which is the odd one out? (a) open a phone charger (b) take cells out after use (c) poke things in a socket (d) touch a switch when wet
25. 25.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) in parallel (c) not joined (d) by Wi-Fi
26. 26.True or false: to stop if a part gets hot is not safe. (a) True (b) False
27. 27.Which of these mainly makes movement? (a) a rice cooker (b) an electric toy car (c) a torch (d) an LED lamp
28. 28.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) battery (b) cell (c) motor (d) bulb
29. 29.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) wire (b) cell (c) junction (d) capacitor
30. 30.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) one bulb out, all go out (d) each gets the full volts
31. 31.🔍 Which is the odd one out? (a) a water heater (b) an electric kettle (c) a street light (d) an electric iron
32. 32.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
33. 33.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) a single current path (d) each gets the full volts
34. 34.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 12 V (c) 230 V (d) 9 V
35. 35.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
36. 36.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
37. 37.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
38. 38.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
39. 39.🔋 4 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
40. 40.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) water drops (c) electrons (d) dust particles

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids